As touched on in the following:
when removing entries from @ManyToMany
mappings, there is an element of manual tweaking involved to remove the foreign keys.
I have been using my own JPA CRUD for years and have a nice solution for this: CrudDao eg NoteDao .
But I've been recently very impressed by Spring JPA and the ability to autogenerate Cruds by declaring an interface and then creating similarly named namedQuery
s on the @Entity
.
But how do I fix the @ManyToMany
remove problem? I'll essentially have remove
methods on my Crud that expose this "feature" of JPA.
I appear to have solved this using @PreRemove
, as noted in https://stackoverflow.com/a/14911910/1041691
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